Question

$k) \frac {6}{5} x + \frac{2}{3} = - 11$
$l) - \frac{3}{5} x + \frac{2}{3} = - \frac{11}{2}$

dau coroana
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Answer 1

Răspuns:

Explicație pas cu pas:

a) x+5 = 0; x = -5

b) = 2x = 6+3; 2x = 9; x = 9/2

c) = -x = 7-9;-x = -2; x = 2

d) = 3x+5 = 22; 3x = 22-5; 3x = 17; x = 17/3.

e) = -3x+10 = 120; -3x = 120-10; -3x = 110; x = -110/3

f) = 5x = 4; x = 4/5

g) = -7x = 14; x = -2

h) = x-14 = 22; x = 14+22; x = 36

i) = -x = 5/2 +3; x = -11/2

j) = 3x = -2-4; 3x = -6; x = -2

k) = 18x+10 = -165; 18x = -165-10; 18x = -175; x = -175/18.

l) = -18x+20 = -165; -18x = -165-20; -18x = -185;

x = 185/18